Pathfinder Magnetism BYU 16

Channel:
India Santosh Sir IITK (Apex Physics)
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Published on ● Video Link: https://www.youtube.com/watch?v=IeAXEv_DQU0


Duration: 6:55
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A small ball of mass m = 1.0 g and charge q = 2.0 micro C is falling vertically with terminal velocity u = 0.1 m/s in a viscous fluid. After a uniform and constant horizontal magnetic field of induction B is switched on, it is observed that the ball acquires another terminal velocity and power dissipated in the viscous fluid becomes n = 0.5 times of the power dissipated prior to switching on the magnetic field. At what maximum value of magnetic induction is this possible ? Dependence of the viscous forces on the velocity is unknown.



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